- Turkish Journal of Chemistry
- Vol: 28 Issue: 1
- Kinetics and Mechanism of Oxidation of n--Propanolamine by Dihydroxydiperiodatonickelate(IV) in Alka...
Kinetics and Mechanism of Oxidation of n--Propanolamine by Dihydroxydiperiodatonickelate(IV) in Alkaline Medium
Authors : Jin-huan Shan, Jing Qian, Ming-zhu Gao, Shi-gang Shen, Han-wen Sun
Pages : 9-16
View : 11 | Download : 5
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :The kinetics of oxidation of n--Propanolamine (n-PA) by dihydroxy diperiodato-nickelate(IV) (DPN) in alkaline medium was studied with spectrophotometry in a temperature range of 293.2-308.2 K. The reaction was found to be pseudo first-order with respect to DPN and fractional order to n-PA. The rate conatant kobs, rose with an increase in the concentration of OH- and a decrease in the concentration of IO4-. Added salts did not affect the rate and no free radical was detected. From the evaluation of linear data, a reaction mechanism is proposed which involves a pre-equilibrium of an adduct formation between n-PA and dihydroxymonoperiodatonickelate(IV) (MPN), and the activation parameters of the rate-determining step have been calculated.Keywords : Dihydroxydiperiodatonickelate(IV), n--Propanolamine, Redox reaction, Kinetics and mechanism